Microprocessor based controller for heating system

Details Microprocessor based controller for heating system Microprocessor based controller for heating system

1981-12-17

1983-04-26

Makay, Albert J.

Heating systems

Automatic control

Water

237 19, 236 70, 431 69, 236 9R, 236 94, 236 46R, 364557, F24D 300

Patent

active

043810756

ABSTRACT:
An integrated, microprocessor-based primary control system for a building heating system. The control system includes in one unit a microprocessor and associated circuitry for (1) establishing the high limit of heat exchanger operation, (2) establishing the low-limit of heat exchanger operation for systems having a summer/winter coil, (3) modulating heat exchanger temperature as a function of outdoor temperature, (4) detecting alarm conditions, providing audio-visual signals while locking out heat exchanger operation in response thereto, and (5) providing an override time period for domestic hot water production in systems having a summer/winter coil.

REFERENCES:
patent: 4200910 (1980-04-01), Hall
patent: 4290551 (1981-09-01), Johnstone
patent: 4300199 (1981-11-01), Yoknis et al.
American Stablis, Enertrol Instruction Manual, Jan. 1979.

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